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authorAndiry Xu <andiry.xu@amd.com>2011-09-23 17:19:48 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2011-09-26 18:51:08 -0400
commitc9682dffceb4bb3bdf6df4c0c87c4b887b03f5b7 (patch)
treefe565d63db99160febc6824f091ba4217c5917c9 /drivers/usb/host/xhci-hub.c
parent1ff4df56846d10379939166713bb2908e6a5ee0e (diff)
xHCI: set link state
Introduce xhci_set_link_state() to remove redundant codes. Signed-off-by: Andiry Xu <andiry.xu@amd.com> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/xhci-hub.c')
-rw-r--r--drivers/usb/host/xhci-hub.c72
1 files changed, 29 insertions, 43 deletions
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 7a62b023b4d1..ef03c18a0128 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -392,13 +392,25 @@ static int xhci_get_ports(struct usb_hcd *hcd, __le32 __iomem ***port_array)
392 return max_ports; 392 return max_ports;
393} 393}
394 394
395void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array,
396 int port_id, u32 link_state)
397{
398 u32 temp;
399
400 temp = xhci_readl(xhci, port_array[port_id]);
401 temp = xhci_port_state_to_neutral(temp);
402 temp &= ~PORT_PLS_MASK;
403 temp |= PORT_LINK_STROBE | link_state;
404 xhci_writel(xhci, temp, port_array[port_id]);
405}
406
395int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, 407int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
396 u16 wIndex, char *buf, u16 wLength) 408 u16 wIndex, char *buf, u16 wLength)
397{ 409{
398 struct xhci_hcd *xhci = hcd_to_xhci(hcd); 410 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
399 int max_ports; 411 int max_ports;
400 unsigned long flags; 412 unsigned long flags;
401 u32 temp, temp1, status; 413 u32 temp, status;
402 int retval = 0; 414 int retval = 0;
403 __le32 __iomem **port_array; 415 __le32 __iomem **port_array;
404 int slot_id; 416 int slot_id;
@@ -472,11 +484,8 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
472 xhci_dbg(xhci, "Resume USB2 port %d\n", 484 xhci_dbg(xhci, "Resume USB2 port %d\n",
473 wIndex + 1); 485 wIndex + 1);
474 bus_state->resume_done[wIndex] = 0; 486 bus_state->resume_done[wIndex] = 0;
475 temp1 = xhci_port_state_to_neutral(temp); 487 xhci_set_link_state(xhci, port_array, wIndex,
476 temp1 &= ~PORT_PLS_MASK; 488 XDEV_U0);
477 temp1 |= PORT_LINK_STROBE | XDEV_U0;
478 xhci_writel(xhci, temp1, port_array[wIndex]);
479
480 xhci_dbg(xhci, "set port %d resume\n", 489 xhci_dbg(xhci, "set port %d resume\n",
481 wIndex + 1); 490 wIndex + 1);
482 slot_id = xhci_find_slot_id_by_port(hcd, xhci, 491 slot_id = xhci_find_slot_id_by_port(hcd, xhci,
@@ -573,10 +582,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
573 xhci_stop_device(xhci, slot_id, 1); 582 xhci_stop_device(xhci, slot_id, 1);
574 spin_lock_irqsave(&xhci->lock, flags); 583 spin_lock_irqsave(&xhci->lock, flags);
575 584
576 temp = xhci_port_state_to_neutral(temp); 585 xhci_set_link_state(xhci, port_array, wIndex, XDEV_U3);
577 temp &= ~PORT_PLS_MASK;
578 temp |= PORT_LINK_STROBE | XDEV_U3;
579 xhci_writel(xhci, temp, port_array[wIndex]);
580 586
581 spin_unlock_irqrestore(&xhci->lock, flags); 587 spin_unlock_irqrestore(&xhci->lock, flags);
582 msleep(10); /* wait device to enter */ 588 msleep(10); /* wait device to enter */
@@ -610,10 +616,8 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
610 } 616 }
611 } 617 }
612 618
613 temp = xhci_port_state_to_neutral(temp); 619 xhci_set_link_state(xhci, port_array, wIndex,
614 temp &= ~PORT_PLS_MASK; 620 link_state);
615 temp |= PORT_LINK_STROBE | link_state;
616 xhci_writel(xhci, temp, port_array[wIndex]);
617 621
618 spin_unlock_irqrestore(&xhci->lock, flags); 622 spin_unlock_irqrestore(&xhci->lock, flags);
619 msleep(20); /* wait device to enter */ 623 msleep(20); /* wait device to enter */
@@ -677,24 +681,13 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
677 if ((temp & PORT_PE) == 0) 681 if ((temp & PORT_PE) == 0)
678 goto error; 682 goto error;
679 683
680 temp = xhci_port_state_to_neutral(temp); 684 xhci_set_link_state(xhci, port_array, wIndex,
681 temp &= ~PORT_PLS_MASK; 685 XDEV_RESUME);
682 temp |= PORT_LINK_STROBE | XDEV_RESUME; 686 spin_unlock_irqrestore(&xhci->lock, flags);
683 xhci_writel(xhci, temp,
684 port_array[wIndex]);
685
686 spin_unlock_irqrestore(&xhci->lock,
687 flags);
688 msleep(20); 687 msleep(20);
689 spin_lock_irqsave(&xhci->lock, flags); 688 spin_lock_irqsave(&xhci->lock, flags);
690 689 xhci_set_link_state(xhci, port_array, wIndex,
691 temp = xhci_readl(xhci, 690 XDEV_U0);
692 port_array[wIndex]);
693 temp = xhci_port_state_to_neutral(temp);
694 temp &= ~PORT_PLS_MASK;
695 temp |= PORT_LINK_STROBE | XDEV_U0;
696 xhci_writel(xhci, temp,
697 port_array[wIndex]);
698 } 691 }
699 bus_state->port_c_suspend |= 1 << wIndex; 692 bus_state->port_c_suspend |= 1 << wIndex;
700 693
@@ -910,25 +903,18 @@ int xhci_bus_resume(struct usb_hcd *hcd)
910 if (test_bit(port_index, &bus_state->bus_suspended) && 903 if (test_bit(port_index, &bus_state->bus_suspended) &&
911 (temp & PORT_PLS_MASK)) { 904 (temp & PORT_PLS_MASK)) {
912 if (DEV_SUPERSPEED(temp)) { 905 if (DEV_SUPERSPEED(temp)) {
913 temp = xhci_port_state_to_neutral(temp); 906 xhci_set_link_state(xhci, port_array,
914 temp &= ~PORT_PLS_MASK; 907 port_index, XDEV_U0);
915 temp |= PORT_LINK_STROBE | XDEV_U0;
916 xhci_writel(xhci, temp, port_array[port_index]);
917 } else { 908 } else {
918 temp = xhci_port_state_to_neutral(temp); 909 xhci_set_link_state(xhci, port_array,
919 temp &= ~PORT_PLS_MASK; 910 port_index, XDEV_RESUME);
920 temp |= PORT_LINK_STROBE | XDEV_RESUME;
921 xhci_writel(xhci, temp, port_array[port_index]);
922 911
923 spin_unlock_irqrestore(&xhci->lock, flags); 912 spin_unlock_irqrestore(&xhci->lock, flags);
924 msleep(20); 913 msleep(20);
925 spin_lock_irqsave(&xhci->lock, flags); 914 spin_lock_irqsave(&xhci->lock, flags);
926 915
927 temp = xhci_readl(xhci, port_array[port_index]); 916 xhci_set_link_state(xhci, port_array,
928 temp = xhci_port_state_to_neutral(temp); 917 port_index, XDEV_U0);
929 temp &= ~PORT_PLS_MASK;
930 temp |= PORT_LINK_STROBE | XDEV_U0;
931 xhci_writel(xhci, temp, port_array[port_index]);
932 } 918 }
933 /* wait for the port to enter U0 and report port link 919 /* wait for the port to enter U0 and report port link
934 * state change. 920 * state change.
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-19 22:26:43 -0500